<!DOCTYPE html>
<!-- saved from url=(0067)http://www.17sucai.com/preview/1528155/2019-04-18/zpluck/index.html -->
<html lang="zh">

<head>
    <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">

    <meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>幸运抽奖盘</title>

    <link href="./index_files/style.css" rel="stylesheet" type="text/css">

    <style>
        .container {
            margin: 0 auto;
        }
        
        .content {
            position: absolute;
            width: 100%;
            height: auto;
            margin: 0px auto;
            margin-top: 58%;
        }
    </style>

</head>

<body>

    <img src="./index_files/game-bg.jpg" alt="" style="position: absolute;width: 100%;height: 100%;">

    <div class="content" style="margin-top: 58%;">
        <img src="./index_files/8.png" id="fen-img" style="display:none;">
        <img src="./index_files/6.png" id="zuliao-img" style="display:none;">
        <img src="./index_files/3.png" id="baowen-img" style="display:none;">
        <img src="./index_files/5.png" id="yundou-img" style="display:none;">
        <img src="./index_files/7.png" id="ganlan-img" style="display:none;">
        <img src="./index_files/4.png" id="yusan-img" style="display:none;">
        <div class="banner">
            <div class="turnplate" style="background-image:url(images/turnplate-bg.png);background-size:100% 100%;">
                <canvas class="item" id="wheelcanvas" width="422px" height="422px"></canvas>
                <img class="pointer" src="./index_files/turnplate-pointer.png">
            </div>
        </div>
    </div>

    <div id="sbtn">
        <a href="http://www.17sucai.com/preview/1528155/2019-04-18/zpluck/index.html#"><img src="./index_files/btn-rule.png" alt=""></a>
        <a href="http://www.17sucai.com/preview/1528155/2019-04-18/zpluck/index.html#"><img src="./index_files/btn-zjcx.png" alt=""></a>
    </div>

    <script type="text/javascript" src="./index_files/jquery.min.js"></script>
    <script type="text/javascript" src="./index_files/awardRotate.js"></script>
    <script type="text/javascript">
        var turnplate = {
            restaraunts: [], //大转盘奖品名称
            colors: [], //大转盘奖品区块对应背景颜色
            outsideRadius: 192, //大转盘外圆的半径
            textRadius: 155, //大转盘奖品位置距离圆心的距离
            insideRadius: 68, //大转盘内圆的半径
            startAngle: 0, //开始角度
            bRotate: false //false:停止;ture:旋转
        };

        $(document).ready(function() {
            //动态添加大转盘的奖品与奖品区域背景颜色
            turnplate.restaraunts = ["20积分", "足疗机", "20积分", "保温杯", "20积分", "手持式电熨斗", "20积分 ", "橄榄油", "20积分", "晴雨伞"];
            turnplate.colors = ["#FFF4D6", "#FFFFFF", "#FFF4D6", "#FFFFFF", "#FFF4D6", "#FFFFFF", "#FFF4D6", "#FFFFFF", "#FFF4D6", "#FFFFFF"];
            var rotateTimeOut = function() {
                $('#wheelcanvas').rotate({
                    angle: 0,
                    animateTo: 2160,
                    duration: 8000,
                    callback: function() {
                        alert('网络超时，请检查您的网络设置！');
                    }
                });
            };

            //旋转转盘 item:奖品位置; txt：提示语;
            var rotateFn = function(item, txt) {
                var angles = item * (360 / turnplate.restaraunts.length) - (360 / (turnplate.restaraunts.length * 2));
                if (angles < 270) {
                    angles = 270 - angles;
                } else {
                    angles = 360 - angles + 270;
                }
                $('#wheelcanvas').stopRotate();
                $('#wheelcanvas').rotate({
                    angle: 0,
                    animateTo: angles + 1800,
                    duration: 8000,
                    callback: function() {
                        //中奖提示
                        alert(txt);
                        turnplate.bRotate = !turnplate.bRotate;
                    }
                });
            };

            $('.pointer').click(function() {
                if (turnplate.bRotate) return;
                turnplate.bRotate = !turnplate.bRotate;
                //获取随机数(奖品个数范围内)
                var item = rnd(1, turnplate.restaraunts.length);
                //奖品数量等于10,指针落在对应奖品区域的中心角度[252, 216, 180, 144, 108, 72, 36, 360, 324, 288]
                rotateFn(item, turnplate.restaraunts[item - 1]);
                //  switch (item) {
                // 	case 1:
                // 		rotateFn(252, turnplate.restaraunts[0]);
                // 		break;
                // 	case 2:
                // 		rotateFn(216, turnplate.restaraunts[1]);
                // 		break;
                // 	case 3:
                // 		rotateFn(180, turnplate.restaraunts[2]);
                // 		break;
                // 	case 4:
                // 		rotateFn(144, turnplate.restaraunts[3]);
                // 		break;
                // 	case 5:
                // 		rotateFn(108, turnplate.restaraunts[4]);
                // 		break;
                // 	case 6:
                // 		rotateFn(72, turnplate.restaraunts[5]);
                // 		break;
                // 	case 7:
                // 		rotateFn(36, turnplate.restaraunts[6]);
                // 		break;
                // 	case 8:
                // 		rotateFn(360, turnplate.restaraunts[7]);
                // 		break;
                // 	case 9:
                // 		rotateFn(324, turnplate.restaraunts[8]);
                // 		break;
                // 	case 10:
                // 		rotateFn(288, turnplate.restaraunts[9]);
                // 		break;
                // }
                console.log(item);
            });
        });

        function rnd(n, m) {

            n = 1; //最小随机数
            m = 100; //最大随机数（概率范围最大值）
            //最大数数不超过最大随机数
            var ransluck = [50, 60, 65, 70, 75, 80, 85, 90, 95, 100]; //概率为比自己小的第一个数之间的差
            var randoms = Math.floor(Math.random() * (m - n + 1) + n);
            if (randoms <= ransluck[0]) {
                var random = 1;
            } else if (randoms <= ransluck[1]) {
                var random = 2;
            } else if (randoms <= ransluck[2]) {
                var random = 3;
            } else if (randoms <= ransluck[3]) {
                var random = 4;
            } else if (randoms <= ransluck[4]) {
                var random = 5;
            } else if (randoms <= ransluck[5]) {
                var random = 6;
            } else if (randoms <= ransluck[6]) {
                var random = 7;
            } else if (randoms <= ransluck[7]) {
                var random = 8;
            } else if (randoms <= ransluck[8]) {
                var random = 9;
            } else if (randoms <= ransluck[9]) {
                var random = 10;
            }
            //alert(randoms);
            //alert(random);
            return random;

        }


        //页面所有元素加载完毕后执行drawRouletteWheel()方法对转盘进行渲染
        window.onload = function() {
            drawRouletteWheel();
        };

        function drawRouletteWheel() {
            var canvas = document.getElementById("wheelcanvas");
            if (canvas.getContext) {
                //根据奖品个数计算圆周角度
                var arc = Math.PI / (turnplate.restaraunts.length / 2);
                var ctx = canvas.getContext("2d");
                //在给定矩形内清空一个矩形
                ctx.clearRect(0, 0, 422, 422);
                //strokeStyle 属性设置或返回用于笔触的颜色、渐变或模式  
                ctx.strokeStyle = "#FFBE04";
                //font 属性设置或返回画布上文本内容的当前字体属性
                ctx.font = '16px Microsoft YaHei';
                for (var i = 0; i < turnplate.restaraunts.length; i++) {
                    var angle = turnplate.startAngle + i * arc;
                    ctx.fillStyle = turnplate.colors[i];
                    ctx.beginPath();
                    //arc(x,y,r,起始角,结束角,绘制方向) 方法创建弧/曲线（用于创建圆或部分圆）    
                    ctx.arc(211, 211, turnplate.outsideRadius, angle, angle + arc, false);
                    ctx.arc(211, 211, turnplate.insideRadius, angle + arc, angle, true);
                    ctx.stroke();
                    ctx.fill();
                    //锁画布(为了保存之前的画布状态)
                    ctx.save();

                    //----绘制奖品开始----
                    ctx.fillStyle = "#E5302F";
                    var text = turnplate.restaraunts[i];
                    var line_height = 17;
                    //translate方法重新映射画布上的 (0,0) 位置
                    ctx.translate(211 + Math.cos(angle + arc / 2) * turnplate.textRadius, 211 + Math.sin(angle + arc / 2) * turnplate.textRadius);

                    //rotate方法旋转当前的绘图
                    ctx.rotate(angle + arc / 2 + Math.PI / 2);

                    /** 下面代码根据奖品类型、奖品名称长度渲染不同效果，如字体、颜色、图片效果。(具体根据实际情况改变) **/
                    if (text.indexOf("M") > 0) { //流量包
                        var texts = text.split("M");
                        for (var j = 0; j < texts.length; j++) {
                            ctx.font = j == 0 ? 'bold 20px Microsoft YaHei' : '16px Microsoft YaHei';
                            if (j == 0) {
                                ctx.fillText(texts[j] + "M", -ctx.measureText(texts[j] + "M").width / 2, j * line_height);
                            } else {
                                ctx.fillText(texts[j], -ctx.measureText(texts[j]).width / 2, j * line_height);
                            }
                        }
                    } else if (text.indexOf("M") == -1 && text.length > 6) { //奖品名称长度超过一定范围 
                        text = text.substring(0, 6) + "||" + text.substring(6);
                        var texts = text.split("||");
                        for (var j = 0; j < texts.length; j++) {
                            ctx.fillText(texts[j], -ctx.measureText(texts[j]).width / 2, j * line_height);
                        }
                    } else {
                        //在画布上绘制填色的文本。文本的默认颜色是黑色
                        //measureText()方法返回包含一个对象，该对象包含以像素计的指定字体宽度
                        ctx.fillText(text, -ctx.measureText(text).width / 2, 0);
                    }

                    //添加对应图标
                    if (text.indexOf("分") > 0) {
                        var img = document.getElementById("fen-img");
                        img.onload = function() {
                            ctx.drawImage(img, -15, 10);
                        };
                        ctx.drawImage(img, -15, 10);
                    } else if (text.indexOf("足疗") >= 0) {
                        var img = document.getElementById("zuliao-img");
                        img.onload = function() {
                            ctx.drawImage(img, -15, 10);
                        };
                        ctx.drawImage(img, -15, 10);
                    } else if (text.indexOf("保温") >= 0) {
                        var img = document.getElementById("baowen-img");
                        img.onload = function() {
                            ctx.drawImage(img, -15, 10);
                        };
                        ctx.drawImage(img, -15, 10);
                    } else if (text.indexOf("电熨斗") >= 0) {
                        var img = document.getElementById("yundou-img");
                        img.onload = function() {
                            ctx.drawImage(img, -15, 10);
                        };
                        ctx.drawImage(img, -15, 10);
                    } else if (text.indexOf("橄榄") >= 0) {
                        var img = document.getElementById("ganlan-img");
                        img.onload = function() {
                            ctx.drawImage(img, -15, 10);
                        };
                        ctx.drawImage(img, -15, 10);
                    } else if (text.indexOf("雨伞") >= 0) {
                        var img = document.getElementById("yusan-img");
                        img.onload = function() {
                            ctx.drawImage(img, -15, 10);
                        };
                        ctx.drawImage(img, -15, 10);
                    }

                    //把当前画布返回（调整）到上一个save()状态之前 
                    ctx.restore();
                    //----绘制奖品结束----
                }
            }
        }
    </script>


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</html>